Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1922)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1923)

Die Pflanzenwelt Deutschlands; Lehrbuch der Formations- biologie. Eine Darstellung der Lebensgeschichte der wildwachsenden Pflanzenvereine und der Kulturflächen - Graebner, Paul, 1871 -1933 (Quelle & Meyer, 1909)

Die Phanerogamen - Flora Oesels und der benachbarten Eilande und Beitrag zur Flora der Insel Runoe - Sass, Arthur, Baron von. (Druck von H. Laakmann, 1860)

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Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1757)

Phytogeography of Nebraska. 1. General survey by Roscoe Pound and Frederic E. Clements - Clements, Frederic E. (Frederic Edward), 1874 -1945 (Published by the Seminar, 1900)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1855)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1857)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1858)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1860)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1861)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1862)

The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1841)

The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1850)

Phytoneuron (Guy L. Nesom, 2012)

Le piante vascolari raccolte dal Rev. P.C. Silvestri nell'Hu-peh, durante gli anni 1904-1907 (e negli anni 1909, 1910) - Silvestri, Cipriano. (Pellas, 1911)

Die Pilze Böhmens - Bubák, František, 1866 -1925 (In Commission bei F. ivna, 1908)

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Plant community types of sand dunes and sand plains in selected areas of the boreal natural region - Alberta. Alberta Sustainable Resource Development. (The Company, 2005)

Plant species of special concern and plant associations of Sheridan County, Montana - Heidel, Bonnie L. (Montana Natural Heritage Program, 2000)

Plantæ favershamienses : a catalogue of the more perfect plants growing spontaneously about Faversham, in the county of Kent - Jacob, Edward, 1709 or 1710 -1788 (Printed for the author; by J. March, 1777)

Plantenschat : inleiding tot de kennis der flora van Nederland - Bruinsma, Vitus. (P. Noordhoff, 1898)

The plants of Michigan; simple keys for the identification of the native seed plants of the state - Gleason, Henry A. (Henry Allan), 1882 -1975 (G. Wahr, 1918)

Plants of Riding Mountain National Park, Manitoba - Canadian Parks Service. (Research Branch, Agriculture Canada, 1988)

Plants of the Punjab : a descriptive key to the flora of the Punjab, North-west Frontier Province, and Kashmir - Bamber, Charles James, 1855 - (Supt. Govt. Printing, Punjab, 1916)

Plants of the Punjab; a descriptive key to the flora of the Punjab, North-west Frontier Province and Kashmir - Bamber, Charles James, 1855 - (Printed by The Superintendent Government Printing, 1916)

Popular field botany; containing a familiar and technical description of the plants most common to the various localities of the British Isles, adapted to the study of either the artificial or natural systems - Catlow, Agnes, 1807? -1889 (Reeve, Benham, and Reeve, 1848)

Populäre Botanik oder gemeinfassliche Anleitung zum Studium der Pflanze und des Pflanzenreiches. Zugleich ein Handbuch zum Bestimmen der Pflanzen auf Excursionen - Schmidlin, Eduard, 1808? -1890 (Krais & Hoffmann, 1857)

Practical hints respecting moths and butterflies, with notices of their localities : forming a calendar of entomological operations throughout the year, in pursuit of Lepidoptera - Shield, Richard. (John Van Voorst, 1856)

Preliminary catalog of Anthophyta and Pteridophyta, reported as growing spontaneously within one hundred miles of New York City - Torrey Botanical Club. (1888)

Preliminary catalogue of Anthophyta and Pteridophyta, reported as growing spontaneously within one hundred miles of New York City - Torrey Botanical Club. (1888)

A preliminary catalogue of the flora of New Jersey - Britton, Nathaniel Lord, 1859 -1934 (Office of the Survey, 1881)

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Preliminary classification of native wheat grass (Agropyron spp.) community types in Alberta - Alberta. Alberta Environment. (Geowest Environmental Consultants Ltd, 2001)

Prirodoslovna istraživanja - Jugoslavenska akademija znanosti i umjetnosti. (1916)

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Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1935)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1950)

Proceedings - Dorset Natural History and Archaeological Society - Dorset Natural History; Archaeological Society. (1877)

Proceedings of the Bath Natural History and Antiquarian Field Club - Bath Natural History; Antiquarian Field Club. (1867)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1892)

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Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1963)

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Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1959)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1981)

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Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 2006)

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Proceedings of the Literary and Philosophical Society of Manchester - Literary; Philosophical Society of Manchester. (The Society, 1868)

Proceedings of the Philosophical Society of Glasgow - Philosophical Society of Glasgow.

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1884)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1901)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1906)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1909)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1960)

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Procès-verbaux - Société Linnéenne de Bordeaux. (1905)

Prodrome de la flore des environs d'Anvers et d'une partie de la Campine - Société Encyclographique Des Sciences Médicales (1841)

Prodrome de la flore du Grand-Duché de Luxembourg - Koltz, J. P. J. (Jean Pierre Joseph), 1827 -1907 (L. Schamburger, 1873)

Prodromus der Flora der preussischen Rheinlande : erste Abtheilung, Phanerogamen ... - Wirtgen, Philipp Wilhelm, 1806 -1870 (Henry & Cohen, 1842)

Prodromus florae Batavae - Nederlandsche Botanische Vereeniging, Leyden. (F.E. MacDonald, 1902)

Prodromus florae batavae; nieuwe lijst der Nederlandsche phanerogamen en vaatkryptogamen - Nederlandsche Botanische Vereeniging (F.E. Macdonald, 1901)

Prodromus florae stargardiensis : continens plantas in Ducatu Megapolitano-Stargardiensi S. Strelitzensi sponte provenientes - Schultz, Karl Friedrich, 1765 -1837 (sumtibus C. F. E. Spaethen, 1806)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1838)

Prof. dr. Thom©♭'s Flora von Deutschland, ©sterreich und der Schweiz in wort und bild f©ơr schule und haus - Thomé, Otto W. (Otto Wilhelm), 1840 -1925 (F. E. K©œhler, 1886)

Prof. dr. Thomé's Flora von Deutschland, Österreich und der Schweiz, in wort und bild, für schule und haus ... mit ... - Migula, W. (Walter), 1863 -1938 (1889)

Prof. dr. Thomé's Flora von Deutschland, Österreich und der Schweiz, in wort und bild, für schule und haus ... mit ... - Migula, W. (Walter), 1863 -1938 (1905)

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Range plant community types and carrying capacity for the lower foothills subregion of Alberta : fourth approximation - Alberta. Alberta Sustainable Resource Development. (Sustainable Resource Development, Public Lands and Forests, 2005)

Range plant community types and carrying capacity for the lower foothills subregion of Alberta : third approximation - Alberta. Public Lands Division. (Alberta Environment, Land and Forest Service, 2000)

Rangeland, rare plant and weed monitoring in Willmore Wilderness Park - Alberta Land; Forest Services. (Alberta Environment, Land and Forest Service, Natural Resource Service, 2000)

A rare plant survey of the Wainwright Dunes Ecological Reserve - Alberta. Alberta Sustainable Resource Development. (Alberta Sustainable Resource Development, Resource Data Branch, Public Lands Division, 2003)

Raupenkalender, oder systematisches Verzeichniss aller Raupen so in Deutschland bekant sind - Schott, J. J. (P. H. Guilhauman, 1829)

Reading Naturalist. Reading - Reading Natural History Society.

Recent advances in cytology - Darlington, C. D. (Cyril Dean), 1903 - (P. Blakiston's son & co., inc, 1937)

Recherches sur la géographie botanique du Lyonnais - Magnin, Antoine, 1848 -1926 (J.-B. Baillière, 1879)

Recueil de l'Institut botanique (Université de Bruxelles) - Institut botanique Léo Errera. (Henri Lamertin, 1902)

Recueil des travaux botaniques néerlandais - Koninklijke Nederlandse Botanische Vereniging. (Société botanique néerlandaise, 1904)

Reise durch das Altai-Gibirge und die soongorische Kirgisen=Steppe : Auf Kosten der Kaiserlichen Universität Dorpat unternommen im jahre 1826 in Begleitung der Herren D. Carl Anton Meyer und D. Alexander von Bunge - Ledebour, Carl Friedrich von, 1785 -1851 (G. Reimer, 1829)

Reise in den äussersten Norden und Osten Sibiriens während der Jahre 1843 und 1844 mit Allerhöchster Genehmigung auf Veranstaltung der Kaiserlichen Akademie der Wissenschaften zu St. Petersburg ausgeführt und in Verbindung mit vielen Gelehrten - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Buchdr. der K. Akademie der Wissenschaften : Zu haben bei Eggers, 1856)

Reisen in Amur-Land und auf der Insel Sachalin : im Auftrage der Kaiserlich-Russischen Geographischen Gesellschaft ausgefuehrt - Schmidt, Friedrich, 1832 -1908 (Commissionaires de l'Académie impériale des sciences, 1868)

Reliquiae Formánekianae : enumeratio critica plantarum vascularium, quas itineribus in Haemo Peninsula et Asia Minore (Bithynia) factis collegit Dr. Ed. Formánek - Vandas, Karel, 1861 -1923 (Comitiorum Marchionatus Moraviae, 1909)

Remarks on the geographical distribution of British plants : chiefly in connection with latitude, elevation, and climate - Watson, Hewett Cottrell, 1804 -1881 (Printed for Longman, Rees, Orme, Brown, Green, and Longman, 1835)

Repertorium commentationum a societatibus litterariis editarum - Reuss, Jeremias David, 1750 -1837 (apud Henricum Dieterich, 1802)

Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1907)

Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1910)

Report - British Columbia Provincial Museum. (1917)

Report - British Columbia Provincial Museum. (Printed by W.H. Cullin, 1933)

Report and transactions - Guernsey Society of Natural Science; Local Research. (The Society, 1890-1922, 1890)

Report and transactions - Guernsey Society of Natural Science; Local Research. (The Society, 1890-1922, 1895)

Report and transactions - Guernsey Society of Natural Science; Local Research. (The Society, 1890-1922, 1905)

Report and transactions - Guernsey Society of Natural Science; Local Research. (The Society, 1890-1922, 1909)

Report and Transactions / East Kent Scientific and Natural History Society - East Kent Scientific; Natural History Society. (1901)